<template>
    <div id="root">
        <div class="todo-container">
            <div class="todo-wrap">
                <Header :addList='addList' />
                <List :todos='todos' :delList='delList' :checkOne='checkOne' />
                <Footer :clearChecked='clearChecked' :checkAll='checkAll' :todos='todos' />
            </div>
        </div>
    </div>
</template>

<script>
    import Header from './components/Header'
    import List from './components/List'
    import Footer from './components/Footer'

    export default {
        name: 'App',
        components: {
            Header,
            List,
            Footer
        },
        data() {
            return {
                todos: [{
                        id: 'w2rteqw',
                        title: '和漂亮的女同事吃饭',
                        done: true
                    },
                    {
                        id: 'w32d3g3',
                        title: '玩游戏',
                        done: false
                    },
                    {
                        id: 'w7y8988',
                        title: '学习',
                        done: true
                    }
                ]
            }
        },
        methods: {
            addList(msg) {
                if (this.todos.find(todo => todo.title === msg.title)) {
                    alert('您编辑的任务已存在,请重新编辑!!!');
                    return false;
                }
                this.todos.unshift(msg);
                return true;
            },
            delList(id) {
                let newTodos = this.todos.filter(todo => todo.id !== id);
                this.todos = newTodos;
            },
            checkOne(id, flag) {
                this.todos.forEach(todo => {
                    if (todo.id === id) {
                        todo.done = flag
                    }
                })
            },
            clearChecked() {
                const newTodos = this.todos.filter(todo => todo.done === false)
                this.todos = newTodos;
            },
            checkAll(flag) {
                this.todos.forEach(todo => {
                    todo.done = flag
                })
            }
        }
    }
</script>

<style>
    /*base*/
    body {
        background: #fff;
    }

    .btn {
        display: inline-block;
        padding: 4px 12px;
        margin-bottom: 0;
        font-size: 14px;
        line-height: 20px;
        text-align: center;
        vertical-align: middle;
        cursor: pointer;
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
        border-radius: 4px;
    }

    .btn-danger {
        color: #fff;
        background-color: #da4f49;
        border: 1px solid #bd362f;
    }

    .btn-danger:hover {
        color: #fff;
        background-color: #bd362f;
    }

    .btn:focus {
        outline: none;
    }

    .todo-container {
        width: 600px;
        margin: 0 auto;
    }

    .todo-container .todo-wrap {
        padding: 10px;
        border: 1px solid #ddd;
        border-radius: 5px;
    }
</style>